msj121
Junior Member level 3
I see my avr (attiny2313a) output over tx to rx of sim900 the command "AT+CENG=1" to stop transferring "AT+CENG=2". I was spitting out some of the processed AT+CENG=2 data, probably 50 chars worth. I would presume this shouldn't affect things, but with the added data the sim900 remains silent until I hit some interrupt or something on my avr to send another at command... then it registers the first one not the second.
Any ideas? Is this a receive buffer issue? I just want to make sure even if I have a work around like a delay that there is a better way or if there isn't.
Btw, I tied cts to rts and dsr,dtr,dcd to each other. Should I be using any of these? The sim900 seems to get the command just not "OK" it until later. Like I said I eavesdropped on the line and saw the command.
Any ideas? Is this a receive buffer issue? I just want to make sure even if I have a work around like a delay that there is a better way or if there isn't.
Btw, I tied cts to rts and dsr,dtr,dcd to each other. Should I be using any of these? The sim900 seems to get the command just not "OK" it until later. Like I said I eavesdropped on the line and saw the command.